Device for forming looped mesh fabrics



21, 1950 J. GROSZMANN 1,

DEVICE FOR FORMING LOOPED MESH FABRICS Filed May 31, 1946 I 4SheetsSheet l INVENTO&

J. GROSZMANN DEVICE FOR FORMING LOOPED MESH FABRICS Marchfl, 1950 4Sheets-Sheet 2 Filed May 31, 1946 DDUDDUDDDDD-UU DUUDUD'DUUUDDDUDD ByINVENTOR %74%Z/zfl4 March 21, 11950 J'. GROSZMANN 9 DEVICE FOR FORMINGLOOPED MESH FABRICS Filed May 31, 1946 4 Sheets Sheet 3 Q INVENTOR! I BY%fl74/WMI 4;/%w

March EH, 1950 .LGROSZMANN DEVICE FdR FORMING LOOPED MESH FABRICS 4Sheets-Sheet 4 Filed May 31, 1946 INVENTOR.

Patented Mar. 21, 1950 UNITED STATES PATENT QFFICE DEVICE FOR FORMINGLOOPED MESH FABRICS Claims.

This invention relates to a device for the manufacture of a loopedfabric or m'esh wherein a set of hooks cooperates with a set of needleslocated at right angles thereto.

It is an object of the invention to provide an apparatus of the abovetype whereby looped fabrics heretofore generally made by hand withknitting needles may be rapidly and uniformly manufactured.

A further object of the invention is to provide a construction whereinall of the needles entering into the operation may be simultaneouslymoved upwardly or downwardly as desired.

A further object of the invention is to provide needles of the tongueand hook type provided with a heel which serves as the connectingelement with the means for movin the needles in unison.

A still further object of the invention is to provide a set of hookswith each hook located between two consecutive needles and mounted so asto be movable at right angles to the path of the needles. The bent endsof said hooks extend in a direction parallel to the body of the needles.

A still further object of 1 the invention is to provide means forreleasing or expelling the manufactured mesh.

With the above and other objects in View which will become apparent fromthe detailed description below a preferred form of the invention isdescribed below and shown in the drawings in which:

Fig. 1 is a front elevational View of a preferred form of the invention.

Fig. 2 is a cross-sectional view taken upon section line 22 of Fig. 1.

Fig. 3 is a cross-sectional view taken through the needle case.

Fig. 3A is an elevational view of one of the needles.

Fig. 4 is a broken front view of the needle guideplate.

Fig. 5 is a broken front elevational view of the front portion of theapparatus.

Fig. 6 is a broken elevational view of the needle supporting bar.

Fig. 7 is a broken elevational view of the mesh ejecting means.

Figs. 8 to 20, inclusive, are schematic views illustrating thesuccessive steps in the formation of a looped fabric.

In the drawings wherein like reference characters refer to like parts inthe various views the box I is provided with a lid 2. Supported from thelid '2 is a reciprocating driving member M and M for operating the hooks5. The hooks 3 are positioned intermediate adjacent needles 5 and duringtheir reciprocating motion are moved from a position in the rear of theneedles 5 to a position in advance of the needles 5.

The drive M and M may be of any desired type for reciprocating the hooks3. Such reciprocation may take place simultaneously or in sections. Thehooks 3 are positioned in slots 4 which may be provided upon the lid 2or upon a member attached to the lid. The bent ends of the hooks 3 areturned so as to extend parallel with the needles 5.

The needles 5 (see Fig. 3A) comprises a hook 6, a pivoted tongue I, abody 8 and a heel 9. The heel 9 serves to secure the needles to thelongitudinal bar I0.

The bodies of the needles rest and are guided in the grooves or slots Hupon the needle guide 12 (Fig. 4). The guide I2 is secured to the frontof the apparatus by transverse bolts extending through the openings l3and which permit adjustm'ent. The upper portion of the guide I2 isbeveled. I

A box like formation is formed by the element 14 secured to the needleguide [2 wherein the longitudinal bar Ill is disposed. lhe element I4 isprovided in its front side with parallel slots l5, l5 and l6, l6 throughwhich extend the pins I! fixed to the supporting bar ill. The pins I!are engaged by the slotted ends of hell crank levers l8 pivoted at I!)upon element M. The free ends of the levers H? are coupled in pairs bythe rods 20 and 2| which may be actuated by the vertical levers 22 and23 provided with the grips 24 and 25 respectively. A reciprocatingmovement of the rods 2i! and 2! will bring about a simultaneous rise andfall of all the needles 5.

The ejecting bar 26 for the ejection of the manufactured mesh is shownin Figs. 2, 3, 5 and 7 and comprises a bar having the same length as theextent of the needles and being provided at its operating edge with aseries of slots or grooves 21 spaced in accordance with the spacingbetween the needles.

The operation is as follows:

The first step is shown in Figs. 8 and 9 wherein the apparatus is shownwith the hooks 3 in their rearward position and with the needles 5 inraised position with the tongues l in open position, that is, with thehooks 6 open. In order to start a thread A is threaded by hand about allthe bodies of the needles with a turn a being given about each needle.

Then as shown in Figs. 10 and 11 the hooks 3 are advanced bymanipulating the drive M until the hooks reach their extreme forwardposition and project beyond the row of needles. A thread B is thenplaced in the angle made by the bent over ends of the hook and the bodyof the hook. The thread B is positioned throughout the entire width ofthe apparatus upon a series of hooks that correspond in number to theneedles being used.

The next step of the operation is shown in Figs. 12 and 13 wherein thehooks are withdrawn and returned to the original position .as showninFigs. 8 and 9. However in this case the thread B is held by the hooksabove the line of pivoted tongues 1.

Then as shown in Figs. 14 .and 15 the grips 24 and 25 are operated tolower all "the needles 5 s'imultaneously. The needles 5 will slidethrough the loop a closing the pivoted tongues 1 upon the thread Blodged within the hooks 6.

The next step is the ejection of the mesh as shown in Figs. 16 and 17wherein as the needles are lowered the bar .26, in combination with thismovement, is turning and placing the projections thereof underneath theloops (1, pushing it and making it come out above-the hook.

The ejected mesh or the loop a now forms the stitch as shown in Figs. 18and 19 and the thread B is retained in the hooks -6 for the followingstep 0 which takes place by raising the needles 5 so that the thread Bwill exert a pressure upon the back of the pivoted tongues T and openthem. The elements are then in the same initial position as shown inFigs. 8 and 9 with the thread B forming a loop about the body of eachneedle.

The fabric formed as shown in Fig. 20 escapes through the space betweenthe plate i2 and the front of the box .I and a winding tightener forsuch fabric may be attached.

The essential features of the invention have been described above andthey may be utilized in practice with various modifications.

Having now fully described my invention, what I claim as new and desireto secure by Letters Patent is:

1. A device for forming looped mesh fabrics comprising a set of hookneedles for the formation of a first row of loops from a working thread,a heel upon each needle, a bar having apertures therein for receivingsaid heels, a guide for said needles, means for reciprocating said barand consequently said needles as a unit, a set of hooks reciprocatinglymounted at right angles to and intersecting the path of movement of saidneedles for forming further loops in said thread and means coordinatedwith the movement of said needles for stripping said first loops fromsaid needles over said further loops.

2. A device as set forth in claim 1 in which said needles are providedwith pivoted tongues for securing said further loops during thestripping of said first loops.

3. A device as set forth in claim 1 wherein said means for reciprocatingsaid bar comprises pivoted bell crank levers and means for operatingsaid levers in unison.

4. A device-as setter-thin claim 1 in which said needles are providedwith automatically opening tongues for securing said further loopsduring the stripping of said first loops.

5. A device as set forth in claim 4 wherein said automatically openingtongues are closed by .being drawn through .the lower loop of anotherthread around the same needle.

JosE GROSZMANN.

clamp The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date Re. 3,901 Pepper Mar. 29, 1870322,361 Esty July 14, 1885 699,930 Sheridan May 13, 1902 2,063,026Bristow Dec. 3, 1936 2,250,229 Luchsinger July 22, 1941 12,250,230Luchsinger July 22, 1941 FOREIGN PATENTS Number Country Date 174;687Germany Apr. 11, 1929

